ASTROSAT CZTI

Data Quality Report

Orbit 45781

Creation date: 2024-06-27T23:16:07.302315
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1T05_183T01_9000006124_45781cztM0_level2.fits modeM0/AS1T05_183T01_9000006124_45781cztM0_level2_quad_clean.evt
Size (bytes)751,806,720100,272,960
Size717.0 MB 95.6 MB
Events in quadrant A6,019,112696,876
Events in quadrant B6,658,693674,112
Events in quadrant C3,236,164717,979
Events in quadrant D11,419,982498,708

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220241
B0244433
C0142001
D0383251

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64232854.437179%
B642377512.066013%
C6423871.354507%
D6423208432.445898%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 7233 6424 26 26 0.36% 0.40%
B 7233 6424 425 425 5.88% 6.62%
C 7233 6424 35 35 0.48% 0.54%
D 7233 6424 2219 2219 30.68% 34.54%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 10 83 2963548 18973.89 744 726 156.2
A 13 248 132585 844.42 744 726 156.2
A 14 235 23457 145.57 744 726 156.2
B 3 112 1934878 13769.7 720 700 140.5
B 4 171 352934 2507.61 720 700 140.5
B 15 201 337611 2398.52 720 700 140.5
C 14 96 182433 1050.35 734 739 173.0
C 1 3 94298 540.85 734 739 173.0
C 2 14 38901 220.61 734 739 173.0
D 11 241 6631118 37804.57 676 654 175.4
D 2 249 773896 4408.75 676 654 175.4
D 1 52 324537 1846.67 676 654 175.4

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter